either they had to search for a body or jimmy hoffa's body. that is the reason for this. >> heather: this location it's about 30 miles west of where he was last seen. you mentioned those names. they are associated with the house itself? >> i think they are. one of them -- i'm not sure if they are relatives or not. the person who made that allegation the f.b.i., i think those names were connected in some way. one of those names are probably the prime suspect of disappearance of jimmy hoffa. >> heather: what are investigators looking for in these soil samples. what do they hope to find? >> anything they can find. any kind of bone, body, dna anything to prove there is a body there. does the f.b.i. think that is jimmy hoffa? i doubt it. they know what happened with this situation. they have been investigating it for years. i'm sure they know who did it and i'm sure they don't know where his body is. >> heather: in the absence of evidence. rumors have abounded that hoffa's remain were tossed into a florida swamp. in two beneath the old giant stadiu